It's your social organiser again.
What interest would there be in a trip to London between Christmas and New Year?
My rough plan would be to take the train to Cannon Street then a wander around the City of London in a quiet time of the year .
Thursday 30th December have sort of normal train services and perhaps arrive around 11 AM (revised from 1PM) for a few hours photography and to walk off some of the extra weight from the festive activities! This is not my website,
https://www.ianvisits.co.uk/blog/2021/04/12/londons-alleys-hogarth-court-ec3/https://www.ianvisits.co.uk/blog/2021/04/26/londons-alleys-the-outer-temple-wc2/A few ideas off the beaten track , look at the mini-map at the end of the article for other locations nearby.